If you are from the uk (and you are still concerned with the MFLB finisher) you should order from
Azarius.net
Lacentralevapeur
Or vaposhop
They ship from Europe and I think they store the MFLB for the same price of the manufacturer but with cheaper shipping.

I use a Volcano grinder - as long as your material is dry (for vaping it should be very dry) then it stays sharp and you can grind very, very fine. I ended up drilling 2/3mm holes so the load progressively clears into the storage container side, once it's reached the granularity that I'm after. Plus they're dirt cheap to replace, light and not metallic so don't give you any hassle with metal detectors etc.